Sole-leveling machine.



W. C. STEWART.

soLE LEvELxNo MAcmNE.

APPLICATION FILED MAR. 23| |911.

' Patented .Tune 4, 1918.

2 SHEETS-SHEET I w. c. STEWART. SOLE LEVELING MACHINE.

APPLICATION FILED MAR. 23|l9l1.

Patented June 4, 1918.

2 SHEETS-SHEET 2- r l fr pero,

WILLIAM C. STEWART, OF SWAMPSCOTT, MASSACHUSETTS, ASSIGNOR, BY MESNEASSIGNMENTS, TO UNITED SI-IOE MACHINERY CORPORATION, OF PATERSON, NEWJERSEY, A. CORPORATION OF NEW JERSEY.

soLn-nnvnnmc MACHINE.

Specivcation of Letters Patent.

Patented J une 4, 1918.

Application led March 23, 1917. Serial No. 156,827.

To all whom it may concern:

Be it known that I, WILLIAM a subject of Great Britain, residing atSwampscott, in the county of Essex and State of Massachusetts, haveinvented certain new and useful Improvements in Sole- Leveling Machines;and I do hereby declare the following to bea full, clear, and exactdescription of the invention, such as will enable others skilled in theare to which it appertains to make and use the same.

The present invention relates to sole leveling machines andmoreparticularly to a heel clamp for holding a shoe in position upon thelast of a sole levelingmachine of the C. STEWART,

' rolling pressure type.

It is customary in this type of machine to provide means forholding theheel end of the shoe down upon the last during the operation of thepressing form upon the forepart of the shoe and to remove the clampingmeans into an inoperative position when the form is in engagement withthe heel portion of the shoe sole. The actuating mechanism for the heelclamp isarranged to impart simultaneous inward and downward movements tothe clamp to cause the latter to project over and engage with the heelend of the sole. With this mode of operation it sometimes happens,however, that the heel clamp engages with the sole prior to thecompletion of the inward movement which tends to injure the sole ordisplace the latter relative to the last.

`The object of the present invention is to provide a heel clamp of animproved form which is actuated automatically to engage withand clampthe'heel end of the sole without tendency to damage the sole or displacethe sole relative to the last. j

W'ith this object in view a feature of the invention contemplates theprovision in 'a machine of this type of a heel clamp movable toward andfrom the last and mechanism for actuating the clamp to impart an inwardmovement to the clamp, until the latter engages with the end of the shoeand to thereafter move the clamp longitudinally into operativeengagement with. the heel portion of the sole. v

Still further features of the invention advantages of which will beobvious to those skilled in the art from the following description.

The preferred form of the invention is illustrated in the accompanyingdrawings, in which Figure 1 is a view in side elevation of a soleleveling machine having the invention embodied therein; Fig. 2 is anenlarged detail view in side elevation of the heel clamp and itsactuating mechanism; and Fig. 3 is a top plan view of the heel clampactuating mechanism.

The machine illustrated in Fig. 1 of the drawings has the sameconstruction and mode of operation as that shown and described in thepatent to Holt No. 944,620, December 28, 1909. This machine is a doublemachine and comprises two sole pressing forms 10 mounted on carriers 12,and two coperating lasts 14 mounted on jacks or last posts 16. The lastposts 16 are adjustably mounted in carriers 18, and are arranged to belongitudinally adjusted in said carriers by means. of handles 20 andhand wheels 22. Each form carrier is connected to its coperating lastcarrier by means of a link 24,' and the last carriers are connected bymeans of links 26 to cranks on concentric crank shafts 30.` Only one setof devices for operating the crank shafts 30 is illustrated. In theillustrated device the crank shaft 30 is driven from the shaft 32 bymeans of a worm 34 and worm wheel 36 mounted on the shafts 32 and 30,respectively. The shaft 32 is driven by a friction clutch 38, themechanism for operating which is so arranged that the clutch may beconnected by means of a foot treadle, and continue to operate as long asthe foot treadle is depressed. Upon releasing the foot treadle, theclutch is automatically disconnected by means of a timing cam on thecrank shaft 30 to stop the machine with the last located in a positionof presentation for the convenient removal of the shoe.

According to the present invention mechanism is provided for firstmoving the heel clamp inwardly toward the last until the are mountedupon the collar 48, secured to the last post, so that the heel clamppartakes of the longitudinal movements of the last post relative to thelatter. The bell crank 54 is pivoted independently of the last post,however, and operatively engages with the bell crank 46 through theengagement of the roll 52 with an elongated face 49 formed upon thedepending arm of the bell crank 46. With this construction an adjustmentof the last post merely moves the roll 52 along the face 49 withoutdisturbing the operative relation of the parts.

The present mechanism is so constructed that it may be convenientlyapplied to existing machines and with this end in view the arm 56supporting the bell Crank 54 is loosely journaled upon the stationaryshaft 58 and is provided with the second arm 55 extending therefromwhich is secured at its outer end to the jack carrier 18.

While it is preferred to employ the specific construction andarrangement of parts shown and described, it will be understood thatthis construction and arrangement is not essential except so far asspecified in the claims, and may be changed or modified withoutdeparting from the broader features of the invention. p

The invention having been described, what is claimed is:

l. A sole pressing machine, having in combination,l a pivotally-mountedlast post, a last on said post, a cooperating sole pressing form, meansfor relatively oscillating the last and form to level the sole of ashoe, a heel clamp supported on said post, and means.l controlled by themovement of the last, to swing the clamp into engagement with the end ofthe shoe on the last while maintaining said clamp beyond the surface ofthe sole and to longitudinally draw the clamp into Contact therewithafter the clamp engages the end of the shoe.

2. A sole pressing machine having, in combination, a pivotally-mountedlast post, a last on said post, a cooperating sole pressing form, meansfor relatively oscillating said last and form to level the sole of ashoe, a heel-clamp supported on said post, and springoperated means,controlled by the movement of the last, to swing the clamp intoengagement with the end of the shoe while maintaining said clamp beyondthe surface of the sole and to longitudinally draw the clamp intoyielding contact therewith after the clamp engages the end of the shoe.

3. A sole pressing machine comprising a shoe supporting member, acooperating sole pressing member, means for relatively oscillating` thetwo members, a heel clamp, and means for operating the clamp to causethe latter to first advance into engagement with the heel end of a shoeand to thereafter move in a direction substantially normal to thesurface of the sole into engagement therewith.

4. A sole pressing machine comprising a shoe supporting member, acooperating sole pressing member, means for relatively oscillating thetwo members to level a shoe sole, a heel clamp, and means for moving theheel clamp toward the shoe constructed and arranged to cause an initialmovement of the heel clamp in a direction substantially parallel to thesurface of the sole until the clamp engages with the heel end of theshoe, and thereafter move the clamp in a direction substantially normalto the surface of the sole.

5. A sole pressing machine comprising a shoe supporting member, a leverfulcrumed upon the shoe supporting member, a heel clamp pivotallymounted upon the lever, means for oscillating the lever, and means forcausing the heel clamp to rock about the outer end of the lever to movethe heel clamp toward and from a shoe when the lever is oscillated.

6. A sole pressing machine comprising a shoe supporting member, meansfor oscillating the member, a heel clamp, a stationary cam, andconnections between the cam and heel clamp for causing the latter tomove toward and from the shoe when the supporting member is oscillated.

A sole pressing machine having, in combination, a shoe-supporting last,a cooperating sole-pressing form, a carrier, a last post adjustablymounted in said carrier, means to oscillate the carrier to level thesole of a shoe, a heel-clamp operating lever mounted on said post, acam-lever, for controlling'the operation of said clamp, mounted on saidcarrier, and contact connections between the cam-lever and theclamp-operating lever whereby the last post may be adjusted withouteffecting the operation of the heel-clamp.

8. A sole pressing machine comprising a carrier, means for oscillatingthe carrier, a post adjustably mounted in the carrier, a heel clampsupported upon the post, and mechanism supported upon the carrier foroperating the heel clamp when the carrier is oscillated.

9. A sole pressing machine comprising a carrier, a post adjustablymounted in the carrier, a heel clamp supported upon the post, astationary cam, and a bell crank pivotally supported upon the carrier tocause the operation of the heel clamp by the cam.

l0. A sole pressing machine comprising a carrier, a post adjustablymounted in the carrier, a bell crank fulcrumed upon the post, a heelclamp supported upon one arm of the bell crank, a stationary cam, asecond bell crank fulcrumed upon the carrier lll@ and connecting theearn with the first men- `toned bell crank to rock the lathter when thecarrier is oseillated, and means for roekng the heel clamp about` thepivotal snpport when the bell Crank is oseillated.

11. A sole pressing machine Comprising a shoe supporting member, an armfulornned at one end upon the shoe supporting meinber, a heel clamppivotally connected to (Jopies` of thigpairzem,y may be obtained for vecents each, by addresksing the Gominissioner of lPaizalrllifr` thefreeend ofthe arm, a stationary arm,

toward and `from*` the shoe l supportingV member. p

Washington, D. Cl.

